/*
 * Copyright (C) 2012 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package org.ros.osgi.deployment.master.internal;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.ros.osgi.deployment.master.Feature;

/**
 * A feature for a ROS node.
 *
 * @author Keith M. Hughes
 */
public class SimpleFeature implements Feature {
	/**
	 * ID of the feature.
	 */
	private String id;
	
	/**
	 * Bundles needed by the feature.
	 */
	private List<String> bundles = new ArrayList<String>();
	
	private List<String> bundlesToGive;

	public SimpleFeature(String id) {
		this.id = id;
		
		bundles = new ArrayList<String>();
		bundlesToGive = Collections.unmodifiableList(bundles);
	}

	@Override
	public String getId() {
		return id;
	}

	@Override
	public List<String> getRootBundles() {
		return bundlesToGive;
	}
	
	/**
	 * Add a new root bundle to the feature.
	 * 
	 * @param bundleName Name of the new root bundle.
	 */
	public void addRootBundle(String bundleName) {
		bundles.add(bundleName);
	}
	
}
